Sage Weil | f24e998 | 2009-10-06 11:31:10 -0700 | [diff] [blame] | 1 | #ifndef _FS_CEPH_OSD_CLIENT_H |
| 2 | #define _FS_CEPH_OSD_CLIENT_H |
| 3 | |
| 4 | #include <linux/completion.h> |
Sage Weil | 415e49a | 2009-12-07 13:37:03 -0800 | [diff] [blame] | 5 | #include <linux/kref.h> |
Sage Weil | f24e998 | 2009-10-06 11:31:10 -0700 | [diff] [blame] | 6 | #include <linux/mempool.h> |
| 7 | #include <linux/rbtree.h> |
| 8 | |
| 9 | #include "types.h" |
| 10 | #include "osdmap.h" |
| 11 | #include "messenger.h" |
| 12 | |
| 13 | struct ceph_msg; |
| 14 | struct ceph_snap_context; |
| 15 | struct ceph_osd_request; |
| 16 | struct ceph_osd_client; |
Sage Weil | 4e7a5dc | 2009-11-18 16:19:57 -0800 | [diff] [blame] | 17 | struct ceph_authorizer; |
Sage Weil | f24e998 | 2009-10-06 11:31:10 -0700 | [diff] [blame] | 18 | |
| 19 | /* |
| 20 | * completion callback for async writepages |
| 21 | */ |
| 22 | typedef void (*ceph_osdc_callback_t)(struct ceph_osd_request *, |
| 23 | struct ceph_msg *); |
| 24 | |
| 25 | /* a given osd we're communicating with */ |
| 26 | struct ceph_osd { |
| 27 | atomic_t o_ref; |
| 28 | struct ceph_osd_client *o_osdc; |
| 29 | int o_osd; |
| 30 | int o_incarnation; |
| 31 | struct rb_node o_node; |
| 32 | struct ceph_connection o_con; |
| 33 | struct list_head o_requests; |
Yehuda Sadeh | f5a2041 | 2010-02-03 11:00:26 -0800 | [diff] [blame] | 34 | struct list_head o_osd_lru; |
Sage Weil | 4e7a5dc | 2009-11-18 16:19:57 -0800 | [diff] [blame] | 35 | struct ceph_authorizer *o_authorizer; |
| 36 | void *o_authorizer_buf, *o_authorizer_reply_buf; |
| 37 | size_t o_authorizer_buf_len, o_authorizer_reply_buf_len; |
Yehuda Sadeh | f5a2041 | 2010-02-03 11:00:26 -0800 | [diff] [blame] | 38 | unsigned long lru_ttl; |
Yehuda Sadeh | 422d2cb | 2010-02-26 15:32:31 -0800 | [diff] [blame] | 39 | int o_marked_for_keepalive; |
| 40 | struct list_head o_keepalive_item; |
Sage Weil | f24e998 | 2009-10-06 11:31:10 -0700 | [diff] [blame] | 41 | }; |
| 42 | |
| 43 | /* an in-flight request */ |
| 44 | struct ceph_osd_request { |
| 45 | u64 r_tid; /* unique for this client */ |
| 46 | struct rb_node r_node; |
Yehuda Sadeh | 422d2cb | 2010-02-26 15:32:31 -0800 | [diff] [blame] | 47 | struct list_head r_req_lru_item; |
Sage Weil | f24e998 | 2009-10-06 11:31:10 -0700 | [diff] [blame] | 48 | struct list_head r_osd_item; |
| 49 | struct ceph_osd *r_osd; |
Sage Weil | 7740a42 | 2010-01-08 15:58:25 -0800 | [diff] [blame] | 50 | struct ceph_pg r_pgid; |
Sage Weil | f24e998 | 2009-10-06 11:31:10 -0700 | [diff] [blame] | 51 | |
Yehuda Sadeh | 0d59ab8 | 2010-01-13 17:03:23 -0800 | [diff] [blame] | 52 | struct ceph_connection *r_con_filling_msg; |
Sage Weil | 350b1c3 | 2009-12-22 10:45:45 -0800 | [diff] [blame] | 53 | |
Sage Weil | f24e998 | 2009-10-06 11:31:10 -0700 | [diff] [blame] | 54 | struct ceph_msg *r_request, *r_reply; |
| 55 | int r_result; |
| 56 | int r_flags; /* any additional flags for the osd */ |
| 57 | u32 r_sent; /* >0 if r_request is sending/sent */ |
Sage Weil | 350b1c3 | 2009-12-22 10:45:45 -0800 | [diff] [blame] | 58 | int r_got_reply; |
Sage Weil | f24e998 | 2009-10-06 11:31:10 -0700 | [diff] [blame] | 59 | |
| 60 | struct ceph_osd_client *r_osdc; |
Sage Weil | 415e49a | 2009-12-07 13:37:03 -0800 | [diff] [blame] | 61 | struct kref r_kref; |
Sage Weil | f24e998 | 2009-10-06 11:31:10 -0700 | [diff] [blame] | 62 | bool r_mempool; |
| 63 | struct completion r_completion, r_safe_completion; |
| 64 | ceph_osdc_callback_t r_callback, r_safe_callback; |
| 65 | struct ceph_eversion r_reassert_version; |
| 66 | struct list_head r_unsafe_item; |
| 67 | |
| 68 | struct inode *r_inode; /* for use by callbacks */ |
| 69 | struct writeback_control *r_wbc; /* ditto */ |
| 70 | |
| 71 | char r_oid[40]; /* object name */ |
| 72 | int r_oid_len; |
Sage Weil | 3dd72fc | 2010-03-22 14:42:30 -0700 | [diff] [blame^] | 73 | unsigned long r_stamp; /* send OR check time */ |
Sage Weil | f24e998 | 2009-10-06 11:31:10 -0700 | [diff] [blame] | 74 | bool r_resend; /* msg send failed, needs retry */ |
| 75 | |
| 76 | struct ceph_file_layout r_file_layout; |
| 77 | struct ceph_snap_context *r_snapc; /* snap context for writes */ |
| 78 | unsigned r_num_pages; /* size of page array (follows) */ |
| 79 | struct page **r_pages; /* pages for data payload */ |
| 80 | int r_pages_from_pool; |
| 81 | int r_own_pages; /* if true, i own page list */ |
| 82 | }; |
| 83 | |
| 84 | struct ceph_osd_client { |
| 85 | struct ceph_client *client; |
| 86 | |
| 87 | struct ceph_osdmap *osdmap; /* current map */ |
| 88 | struct rw_semaphore map_sem; |
| 89 | struct completion map_waiters; |
| 90 | u64 last_requested_map; |
| 91 | |
| 92 | struct mutex request_mutex; |
| 93 | struct rb_root osds; /* osds */ |
Yehuda Sadeh | f5a2041 | 2010-02-03 11:00:26 -0800 | [diff] [blame] | 94 | struct list_head osd_lru; /* idle osds */ |
Sage Weil | f24e998 | 2009-10-06 11:31:10 -0700 | [diff] [blame] | 95 | u64 timeout_tid; /* tid of timeout triggering rq */ |
| 96 | u64 last_tid; /* tid of last request */ |
| 97 | struct rb_root requests; /* pending requests */ |
Yehuda Sadeh | 422d2cb | 2010-02-26 15:32:31 -0800 | [diff] [blame] | 98 | struct list_head req_lru; /* pending requests lru */ |
Sage Weil | f24e998 | 2009-10-06 11:31:10 -0700 | [diff] [blame] | 99 | int num_requests; |
| 100 | struct delayed_work timeout_work; |
Yehuda Sadeh | f5a2041 | 2010-02-03 11:00:26 -0800 | [diff] [blame] | 101 | struct delayed_work osds_timeout_work; |
Sage Weil | 039934b | 2009-11-12 15:05:52 -0800 | [diff] [blame] | 102 | #ifdef CONFIG_DEBUG_FS |
Sage Weil | f24e998 | 2009-10-06 11:31:10 -0700 | [diff] [blame] | 103 | struct dentry *debugfs_file; |
Sage Weil | 039934b | 2009-11-12 15:05:52 -0800 | [diff] [blame] | 104 | #endif |
Sage Weil | f24e998 | 2009-10-06 11:31:10 -0700 | [diff] [blame] | 105 | |
| 106 | mempool_t *req_mempool; |
| 107 | |
Yehuda Sadeh | 0d59ab8 | 2010-01-13 17:03:23 -0800 | [diff] [blame] | 108 | struct ceph_msgpool msgpool_op; |
Sage Weil | c16e786 | 2010-03-01 13:02:00 -0800 | [diff] [blame] | 109 | struct ceph_msgpool msgpool_op_reply; |
Sage Weil | f24e998 | 2009-10-06 11:31:10 -0700 | [diff] [blame] | 110 | }; |
| 111 | |
| 112 | extern int ceph_osdc_init(struct ceph_osd_client *osdc, |
| 113 | struct ceph_client *client); |
| 114 | extern void ceph_osdc_stop(struct ceph_osd_client *osdc); |
| 115 | |
| 116 | extern void ceph_osdc_handle_reply(struct ceph_osd_client *osdc, |
| 117 | struct ceph_msg *msg); |
| 118 | extern void ceph_osdc_handle_map(struct ceph_osd_client *osdc, |
| 119 | struct ceph_msg *msg); |
| 120 | |
| 121 | extern struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *, |
| 122 | struct ceph_file_layout *layout, |
| 123 | struct ceph_vino vino, |
| 124 | u64 offset, u64 *len, int op, int flags, |
| 125 | struct ceph_snap_context *snapc, |
| 126 | int do_sync, u32 truncate_seq, |
| 127 | u64 truncate_size, |
| 128 | struct timespec *mtime, |
| 129 | bool use_mempool, int num_reply); |
| 130 | |
| 131 | static inline void ceph_osdc_get_request(struct ceph_osd_request *req) |
| 132 | { |
Sage Weil | 415e49a | 2009-12-07 13:37:03 -0800 | [diff] [blame] | 133 | kref_get(&req->r_kref); |
Sage Weil | f24e998 | 2009-10-06 11:31:10 -0700 | [diff] [blame] | 134 | } |
Sage Weil | 415e49a | 2009-12-07 13:37:03 -0800 | [diff] [blame] | 135 | extern void ceph_osdc_release_request(struct kref *kref); |
| 136 | static inline void ceph_osdc_put_request(struct ceph_osd_request *req) |
| 137 | { |
| 138 | kref_put(&req->r_kref, ceph_osdc_release_request); |
| 139 | } |
Sage Weil | f24e998 | 2009-10-06 11:31:10 -0700 | [diff] [blame] | 140 | |
| 141 | extern int ceph_osdc_start_request(struct ceph_osd_client *osdc, |
| 142 | struct ceph_osd_request *req, |
| 143 | bool nofail); |
| 144 | extern int ceph_osdc_wait_request(struct ceph_osd_client *osdc, |
| 145 | struct ceph_osd_request *req); |
| 146 | extern void ceph_osdc_sync(struct ceph_osd_client *osdc); |
| 147 | |
| 148 | extern int ceph_osdc_readpages(struct ceph_osd_client *osdc, |
| 149 | struct ceph_vino vino, |
| 150 | struct ceph_file_layout *layout, |
| 151 | u64 off, u64 *plen, |
| 152 | u32 truncate_seq, u64 truncate_size, |
| 153 | struct page **pages, int nr_pages); |
| 154 | |
| 155 | extern int ceph_osdc_writepages(struct ceph_osd_client *osdc, |
| 156 | struct ceph_vino vino, |
| 157 | struct ceph_file_layout *layout, |
| 158 | struct ceph_snap_context *sc, |
| 159 | u64 off, u64 len, |
| 160 | u32 truncate_seq, u64 truncate_size, |
| 161 | struct timespec *mtime, |
| 162 | struct page **pages, int nr_pages, |
| 163 | int flags, int do_sync, bool nofail); |
| 164 | |
| 165 | #endif |
| 166 | |